|Publication number||US6971897 B1|
|Application number||US 10/696,485|
|Publication date||Dec 6, 2005|
|Filing date||Oct 29, 2003|
|Priority date||Oct 29, 2003|
|Publication number||10696485, 696485, US 6971897 B1, US 6971897B1, US-B1-6971897, US6971897 B1, US6971897B1|
|Inventors||Roger L. Beavers, Victor L. Wright|
|Original Assignee||Tyco Electronics Corporation|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (102), Non-Patent Citations (15), Referenced by (1), Classifications (7), Legal Events (9)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to an improved gel-protected telephone jack.
Telephone jacks have been standard in the telephone industry for some thirty years dating back to the adoption of the registered jack under a Universal Service Order Code system devised by AT&T and adopted by the Federal Communications Commission. The location of these jacks in areas of high humidity and other potentially corrosive environments have caused their premature failure. Attempts have been made over the years to correct this problem by applying a protective coating in the form of gels on the exposed connectors of conventional jacks.
For the most part the gels have been applied to standard jacks without modifications to the jacks. The gel is purported to have properties so that it can be pushed out of the way when a connection is made by the insertion of a plug, so that contact between the plug and connectors in the jack can be made. Upon removal of the plug, a memory in the gel is supposed to cause the gel to flow back into position covering the connectors, so the gel can continue its role of providing environmental protection. However, it has been found that the gel does not survive many such insertions and removals of the plug. Often the gel is physically damaged by the plug insertion, so that upon removal of the plug, the gel does not flow back into its protective covering position.
Various attempts to rectify this problem including the use of the elasteromic walls that are to deflect upon plug insertion and return to an original configuration have not proven to be satisfactory solutions.
Accordingly, there is a need in the art for an improved telephone jack specifically designed to receive such gels and provide improved longevity to the gel.
The assignee of this application is also the assignee of U.S. patent application Ser. No. 10/142,716 filed May 9, 2002, the entire disclosure of which is incorporated herein by reference. That application discloses an improved gel-protected registered telephone jack of the type including a housing, a cavity in the housing, a rear opening in the housing communicating with the cavity to permit positioning of an insert that connects permanent telephone wires to spring connectors, a front opening in the housing communicating with the cavity to receive a plug so as to make contact between wires in the plug and the spring connectors with a gel on the spring connectors to prevent corrosion of the connectors. The improvement may include guides for the insert mounted lower in the rear opening to the housing than in conventional registered jacks and the housing adjacent the rear opening extending rearwardly more than in conventional registered jacks, so that the positioned insert is lower and more rearwardly than in conventional registered jacks. This typically provides more room for gel displacement upon insertion of a plug. The guides may be slanted more downwardly from the rear to the front of the housing than in conventional registered jacks so that the positioned insert slants downwardly more than in conventional registered jacks. The slant typically provides a more gradual impact of a received plug than in conventional registered jacks.
In one embodiment, of our prior application the rear opening is wider in a lower portion thereof than on conventional jacks so that, with the rear facing upward, bubbles in gel applied in a liquid state can escape. It is also desirable to make the rear opening wider in an upper portion thereof than on conventional jacks so that, with the rear facing upward, gel can be applied in a liquid state proximate the spring connectors. The housing has grooves on opposite sides of the front opening extending from a lower front part of the front opening to an upper rear part of the front opening so that a temporary plate may be fitted in the grooves to serve as a dam so that, with the rear facing upward, gel can be applied in a liquid state and not run out of the front opening. Preferably, the insert is a body with a front and a top and the spring connectors extend out of the front and bend rearwardly over at least part of the top, with the intersection of the front and top being a curved edge. The curved edge prevents the gel from being cut, as occurs with conventional gel-protected registered jacks.
The housing disclosed in our prior application typically has a plurality of flanges extending downward into the rear opening to serve as dividers for the spring connectors and the rear opening preferably has spaces outward of the flanges to receive gel displaced when a plug is inserted. The gel has an outer surface and a protective compound on the outer surface to provide a slick surface so the plug can slide over the gel. However, it has been found that further improvements to the housing can be beneficial. In particular it has been found that the possibility of fore-and-aft movement of the insert arising from the previously described structure may prevent the gel from flowing back into its protective covering position.
This present invention provides a retainer that binds the insert to the housing, thereby limiting fore-and-aft translational movement of the insert within the cavity. A fastening process may permanently secure the retainer to the housing. Examples of the fastening process include: ultrasonic welding, forming, bonding, and gluing. The retainer is typically installed adjacent to the insert's rear end. The retainer preferably limits the insert's linear and rotational movement. The retainer preferably provides access to the rear end of the insert. The invention is useable with the subject matter of application Ser. No. 10/142,716 as a preferred embodiment. However, it may also have utility with conventional jacks.
The invention will be better understood by a reading of the Detailed Description of the Preferred Embodiments along with a review of the drawings, in which:
The invention will best be understood with respect to modifications to conventional jacks and the jack of our prior application Ser. No. 10/142,716. The invention will be described in particular with respect to an RJ11 jack. It will be appreciated that other jacks in accordance with the Universal Service Order Codes can be made with similar modifications and are within the scope of the present invention. USOC, Universal Service Order Codes, were developed in the 1970's by AT&T to identify tariffed services and equipment. These codes were lated adopted in part by the FCC, Part 68, Subpart F, Section 68.502. Each of the basic jack styles can be wired for different RJ configurations. For example, the 6-position jack can be wired as an RJ11C (1-pair), RJ14C (2-pair), or RJ25C (3-pair) configuration. An 8-position jack can be wired for configurations such as RJ61C (4-pair) and RJ48C. The keyed 8-position jack can be wired for RJ45S, RJ46S, and RJ47S. The following categories are suitable for use in connection with the invention: RJ11; RJ11C; RJ11W; RJ14C; RJ14W; RJ25C; RJ31X; RJ38X; RJ45S; RJ48C; RJ48S; RJ48X; and RJ61X.
Referring now to
An opening 33 on the front of the jack is sized to securely receive a plug. The plug (not shown) is provided with conductors which contact conductors 38 and has wires leading to equipment to be connected to the jack.
The conventional manufacturing method is to use a jack as described with respect to
Referring now to
The opening 121 is provided enlarged from the opening 21 of the conventional jack. In particular, the opening is larger at a lower portion 124 to provide additional room for gel insertion. Furthermore, the guide surface 131 is provided with substantially less of a slant, so that the corresponding shoulder 142 on an improved insert 136 (
The jack has the conventional dividers 128, but on either side, an opened space 130 is provided to provide additional room for gel insertion. Finally, as best seen in connection with
The jack can be filled with gel by the placement of the temporary dam 150 after placement of the insert 136. The rear of the jack can then be faced upwardly and the liquid gel compound can be inserted and allowed to cure to form a gel that stays in place. Preferably, the dam 150 is coated with a release compound so that it can be removed once the gel has set. Subsequently, the gel can be provided with a mold release coating that acts as a protective compound to give the gel a slick surface. When the plug is inserted, the coating causes it to slide over the top of the gel, rather than cutting it. As it slides, spring conductors 138 are exposed to make contact with the contacts on the plug.
An alternate embodiment of our prior invention is seen in
A benefit of this invention is that retainer 300 omits the need for the conventional release tab 44 that extends below the main body of the insert 336 and the opening 26 in housing 322, saving manufacturing costs. The permanent fastening means used to install retainer 300 provides accurate front-to-rear positioning of the insert 336. Retainer 300 avoids users' and installers' tampering with the insert 336 inside housing 322 or jack 320 and disturbing the gel placement.
As mentioned, the modifications described above can be applied to various types of registered jacks, in addition to RJ11 jacks.
In the USOC Number Suffixes, the following nomenclature is conventional:
RJ (Registered Jack) numbers end with a letter that indicates the wiring or mounting method:
“C” identifies a surface or flush-mounted jack.
“W” identifies a wall-mounted jack.
“X” identifies a complex multi-line or series type jack.
Single line phones, accessories, answering machines, and modems use the RJ11C or RJ11W jack.
Two line phones, accessories and answering machines use the RJ14C or RJ14W jack.
Three line phones and accessories use the RJ25C jack.
Four line phones and accessories use the RJ61X jack.
Burglar and fire alarms circuits use the RJ31X or RJ38X jack.
Single line fixed loss loop data installations use the RJ45S jack.
Four wire data circuits use the RJ48C/RJ48X or RJ48S jack.
Preferably, the gel is a silicone gel and has a Cone penetration from about 18.5 mm to about 23.5 mm. The elongation of the gel is from about 2200% to about 2800%. The Voland hardness of the gel is from about 30 to about 46 Gms. The stress relaxation of the gel is from about 69% to about 77%. A preferred gel is Polydimethylsiloxane.
As can be appreciated, each of the various modifications described above, namely closing the bottom of the housing, extending the rear of the housing, changing the guide surface angle for the insert, opening the space right and left of the dividers, and providing a curved front to the insert are advantageously used in a single embodiment. However, it will be appreciated that various ones of these improvements may be used singly or in combination and yet fall within the scope of the invention.
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|U.S. Classification||439/276, 439/936, 379/438|
|Cooperative Classification||Y10S439/936, H01R13/5216|
|Oct 29, 2003||AS||Assignment|
Owner name: ABACON TELECOMMUNICATIONS, LLC, NORTH CAROLINA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BEAVERS, ROGER L.;WRIGHT, VICTOR L.;REEL/FRAME:014657/0513
Effective date: 20030818
|Sep 12, 2005||AS||Assignment|
Owner name: TYCO ELECTRONICS CORPORATION, PENNSYLVANIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ABACON TELECOMMUNICATIONS LLC;REEL/FRAME:016776/0048
Effective date: 20041015
|Jun 8, 2009||FPAY||Fee payment|
Year of fee payment: 4
|Mar 14, 2013||FPAY||Fee payment|
Year of fee payment: 8
|Jul 7, 2015||AS||Assignment|
Owner name: TYCO ELECTRONICS SERVICES GMBH, SWITZERLAND
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TYCO ELECTRONICS CORPORATION;REEL/FRAME:036074/0740
Effective date: 20150410
|Oct 26, 2015||AS||Assignment|
Owner name: COMMSCOPE EMEA LIMITED, IRELAND
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TYCO ELECTRONICS SERVICES GMBH;REEL/FRAME:036956/0001
Effective date: 20150828
|Oct 29, 2015||AS||Assignment|
Owner name: COMMSCOPE TECHNOLOGIES LLC, NORTH CAROLINA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COMMSCOPE EMEA LIMITED;REEL/FRAME:037012/0001
Effective date: 20150828
|Jan 13, 2016||AS||Assignment|
Owner name: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT, IL
Free format text: PATENT SECURITY AGREEMENT (TERM);ASSIGNOR:COMMSCOPE TECHNOLOGIES LLC;REEL/FRAME:037513/0709
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Free format text: PATENT SECURITY AGREEMENT (ABL);ASSIGNOR:COMMSCOPE TECHNOLOGIES LLC;REEL/FRAME:037514/0196
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